An overview of the ISO 216 envelope size format standard, including definition of C series envelope sizes (C3, C4, C5 etc). The purpose of this site is to explain current international standard envelope sizes, covered by the ISO 216 Standard and to provide size charts to allow a quick lookup of sizes.
URL:
http://www.envelopesizes.info
Date Updated:
September 15, 2009 12:42 PM
